Internal attributions of events, where the self was viewed as an active intentional agent, involved left precentral gyrus (BA 6) and left middle temporal gyrus (BA 39). (cambridge.org)
One of those, the left precentral gyrus, becomes active when people get the urge to move their facial muscles (such as when a song makes them sad). (discovermagazine.com)
Overall correlations were significant for precentral and postperipheral saccade aligned activity and increased from 0.050 and 0.076 to 0.145 and 0.157, respectively. (journals.plos.org)